The term is used metaphorically and does not refer to an actual slope.

Metaphorical Meaning

Emphasizes starting something seemingly harmless that leads to serious problems.

Negative Consequence

Used to warn someone about the dangerous progression of events.

Suggests a series of cause and effect that leads to disaster.

Calls for careful consideration before acting due to potential risks.

Implies that once started, the process becomes increasingly difficult to stop.

Used to predict a chain of events that could lead to an undesirable outcome.